* {
  margin: 0;
  padding: 0;
}
ul,
li {
  list-style: none;
}
html {
  height: 100%;
  background: linear-gradient(to top left, #1af5d0, #405e6e);
}
body {
  transition: 1s;
  height: 100%;
  background: url(https://pic.superbed.cn/item/5cc52fce3a213b041729af94.png);
}
.main {
  width: 900px;
  margin: 0 auto;
  display: flex;
}
.left {
  width: 200px;
  transition: 0.5s;
}

.right {
  width: 620px;
  background: url(https://pic.superbed.cn/item/5cc52af73a213b041729756b.png) no-repeat
    left;
  height: 100vh;
  background-size: 100%;
}
.logo {
  height: 100px;
  width: 100px;
  border-radius: 20px;
  background: url(https://pic.superbed.cn/item/5cc52b543a213b04172979c8.png);
  background-size: cover;
  margin: 80px auto 30px;
  box-shadow: 10px 10px 10px #0a5658;
}
h1 {
  color: #fff;
  text-align: center;
  font-size: 16px;
  letter-spacing: 4px;
  margin-top: 50px;
}
.link {
  margin-top: 50px;
}
.link a {
  display: block;
  text-align: center;
}
.link li {
  color: #fff;
  text-align: center;
  width: 150px;
  padding: 10px;
  background: linear-gradient(to top, #2c666f, #1dd9b9);
  box-shadow: 3px 3px 2px #0a5658;
  display: inline-block;
  margin: 10px auto;
  border-radius: 4px;
  transition: 0.5s;
}

.link li:hover {
  background: rgba(26, 245, 245, 0.4);
}
.qcode {
  text-align: center;
}
.qcode img {
  widows: 150px;
  height: 150px;
  margin: 50px auto;
  text-align: center;
}

@media screen and (max-width: 500px) {
  .main,
  .left {
    width: 100%;
  }
  .right {
    display: none;
  }
}
